Lock



Oct. 16, 1945. A, s KARCzEwsKl 2,3862868 LOCK Filed May 9, 1944 .l n4. T25 5325 2211 10 "i12 1 .2. 42 wil 25 55 ||||Im KILIM,

INVENTOR BY A aw oRNEY Patented Oct. 16, 1945 LOCK Alexander S.Karczewski, North Chicago, Ill., as-

signor to The Yale & Towne Manufacturing Company, Stamford, Conn., acorporation of Connecticut Application May 9, 1944, Serial No. 534,719

(Cl. 292-169) n zontal section through the lock of my invention 17claims.

This invention relates to a door lock of that class in which a latchboltis retracted by an 'outside rollback and an inside rollback, therollbacks being preferably rotatable by inside and outside knobs. Inthis type of lock, a push piece is usually7 employed for locking theoutside rollback, preferably leaving the inside rollback free forrotation. Means are generally provided for retaining the push piece inits locking position, and the said push piece is moved to unlockingposition upon retraction of the latchbolt by endWise push thereagainst,or by rotation of the inside rollback by the inside knob.

The invention of this application relates particularly to means wherebythe push piece is controlled in its movement relatively to the lock andthe outside rollback. The invention relates further to the means wherebythe push piece is moved to unlocking position when the latchbolt isretracted.

While the control mechanism for the push piece forming the contributionin this application is described byme as applied to a lock of thegeneral class I have indicated, those skilled in the art will appreciatethat my invention may be applied to other types of locks. It istherefore important that my invention be not considered as limited toapplication to a lock of the class described. It is also important toconsider that I use the term push'piece in its generic sense. and thatmy invention is not limited to a push piece such as I prefer to use; andto be particularly described here.

A feature of my invention resides inthe utilization of a spring pressingagainst the push piece of my invention at an angle to the direction ofmovement of the pushpiece, and with a portion of the spring movable withthe push piece into its locking and unlocking positions, whereby thespring helps greatly in controlling the movement of the push piece. Astill further feature of my invention resides in the utilization of thespring so pressing against the push piece, for urging the latchbolt intoits projected position.

. A rfurther feature of the invention resides in K the means whereby thepush piece, while urged into its locking and unlocking positions by thespring pressing thereagainst, is yieldingly maintained in either itslocking or unlocking position.

A still further feature of my invention resides in the means whereby thelatchbolt, in either one of its two possible positions in the lockcasing, moves the push piece from a locking to an unlocking positionwhen said latchbolt is retracted.

Referring now to the drawing, Fig. 1 is a horishowing it applied to adoor. Fig. 2 is a view of certain of the vparts of Fig. 1, andillustrating the push piece in its rollback locking position. Fig. 3 isa section taken along lines 3-3 of Fig. 1. Fig. 4 is a section takenalong lines 4 4 of Fig. 3. Fig. 5 is an exploded view of the parts of mylock.

Referring now more particularly to the drawing, it will be noted that mylock is housed within a casing III that may be mounted in a door II, tothe faces of which are applied an outside rose I2 and an inside rose I3.'Ihe outside rose supports an outer knob I 4 equipped with al spindle I5for rotating an outside rollback I6 in the casing I0. Mounted forrotation relatively to the inside rose I3, is a knob IT secured to aspindle I8 for rotating an inside rollback I9 also in the casing I0.Those skilled in the art will appreciate that inside spindle I8 issecured to the outside spindle I 5 against endwise separation in amanner old in the art, the spindles being nevertheless rotatablerelatively one to the other.

Mounted for sliding movement Within the casing'I of my lock,.is alatchbolt 2B best illustrated in Fig. 5. Latchbolt 20 is formed with ahead 2 I and a centrally bored tail portion 22, terminating in a plate23. Extending from the plate 23 are wings 2li whose function will bepresently indicated.

For retractingthe latchbolt upon rotation of either of the rollbacks I6and I9 I utilize what is termed a retractor 25, lbest illustrated inFig. 5. Retractor 25 is urged to the position illustrated in Fig. 3 by aspring 26 that lits at its right end in Fig. 3 about an abutment 21formed on the end of the casing I0. At its left end the spring 26 tsabout a lug 28 that is part of the retractor 25. Struck up lugs 29 areformed on the retractor 25 and cooperate with shoulders 30 of the insiderollback I9 and shoulders 3I of the outside rollback I6. The lugs 29 areof course maintained against the shoulders 30 and 3| under pressure ofthe spring 26 as wellshown in Fig. 3, and therefore act to centralizethe rollbacks I6 and I9 as Will be appreciated by those skilled in theart. Retraction of the retractor 25 by either of the rollbacks I6, I9brings yoke 33 of the retractor against plate 23 of latchbolt 2U andretracts the latchbolt from its positions of Figs. 1, 2 and 3.

The outside rollback I6 protrudes' beyond the inside rollback I9, asseen in Fig. 3 and is formed with a slot 35 for cooperation with alocking lug 36 of a push piece 31 best illustrated in Fig. 5. Push piece31 is mounted in openings 38 and 3S of the casing l for sliding movementtransversely to the casing. For operating the push piece 31 I utilize apush button 4D that is assembled to the push piece 31 by threading thepush button 40 into a suitable bore of the push piece as is wellunderstood by those skilled in the art. The push button 4l) is'prevented from rotation out of assembled relation to the push piece 31through its engagement with the inside rose I3. The assembling of thepush button to the push piece, as. well as the relation of the pushpiece to the inside rose I3, is all well known in this art.

When the push piece is in its. position of Fig. 1 relatively to theremaining mechanism, both the inside and outside rollbacks are freelyrotatable. When the push piece is depressed to its position of Fig. 2,the locking lug 36 entersV the slot 35 of the outside rollback I6 andlocks that rollback against rotation. For retaining the push piece 31 inits position oi;V Fig. 1, or in its locking position of Fig. 2,Lutilizea lug 4l 'formed on the retractor as'illustrated in Fig. 5, anda, triangular lug 4.2 on the pushpiece 31, also shown in Fig. 5- The`manner vin which the lugs 4l and 42 cooperate will be indicatedpresently. 4

The push piece 31 is formed with a lug 43- over which is placed theright hand end of a'spring 4 4. The other end of the spring 44 ismounted within the bore of the sleeve portion 2 2 of the latchbolt 20.It 'is obvious` that the spring 44 effects the projection of thelatchbolt 20. The. spring 44 also acts to maintain the push pieceyieldingly either its locking or unlocking position through theutilization of the lugs 4l and. 42 set forth inthe precedingparagraph.Thus,` itA will be noted in Fig. l that. the spring 4.4 depressed Voutof itsaxial alignment, 'and that it therefore'tends to maintain the.push piece inthe position of` Fig. 1f with its` triangular lug', 4 2belowv the lug 4 l on the retractor. When the pushpiece. is' depressed,the spring is moved therewith toits positionv of Fig. 2, and assists inmaintaining the triangular lug 42 above the. lug. 4.I"f,ormed on theretractor. f

It *will of course be appreciated that when the push pi'cel is,movedfrom its. positionh of Fig. 1 to the positionv ffFig. 2, it willactually momentarily move the retractor to the right throughthefca'mming action of the triangular lug 42 relatively to. the lug 4l.It willnow be further appreciated that should the retractor be movedto.the right in Fig. 2 through the. rotation of insideknob l1,Y the lug 4lwill be withdrawn from below triangular lug. 42 on push piece 31.ASimultaneously, onebf the wings 24 of the latchbolt will abut thetriangular lug 42 and move the pushpiece from its 'position of` Fig. 2to its position ofY Fig. 1. In other words, retraction of the. latchboltbyv the. inside knob effects the movement of the push. piece toitsrelease position.

Should the push piece be in its position ot Fig. 2 with the door open,and should the door-be swung shut, thelatchbolt 2l)4 will be retracteddue tothe rearward camming action ofthe usual strike contacting thelatchbolt head 2.I.. One of the Awings 24 will then contact thetriangular lug 4-2 of the push piece. 31. and will move the push pieceto the position of Fig. 1in exactly the. same manner as indicated above.The retractor 25 will ot course yieldingly resist this movement; butyits resistance isv` slight.

It isimportantfto note that the two wings 24 on the latchbolt areformedrto allow' reversing of the iatenboit relativen; to theY lockmechanism. Thus, the latchbolt may be rotated 180 from its assaeeposition in Figs. 1, 2 and 3 without in any way aiecting the operationof the mechanism. Those skilled in the art will fully appreciate thevalue of this feature.

I believe that the construction and operation of my invention will nowbe apparent to those skilled inthe art.

I` now claim:

1. In a lock of the class described, a casing, a

i push piece mounted for sliding linear movement on said casing, ahelical spring pressing axially thereof at one end against said pushpiece transversely to the direction of sliding movement of saidpushpiece. and against a part of the lock at its other endf, and meanswhereby said push piece moves said end of the spring with it as itmoves` on said casing.

2. AIn a lock of the class described, a casing, a push piece mounted formovement on said casing, a helical spring positioned with its axis atright angles to said push piece andvbearing at one end thereof againstsaid push piece, and against a part. of. the lock at its other end,l andmeans. whereby said push piece. moves. said end of the spring. to one orthe other side. of the axis of said spring as said push pi'ece. moves.on said casing.

3. In a lock ofV the class described, a casing, a push piece meansmountingr said push. piece for linear sliding movement on said,casingfbetween a locking and a releasing. Position, a helical springpressing axially thereof at one. end, against. said push piecesubstantially at right. angles to the direction of.` sliding movement ofsaid push piece, and against apart of the lock, at its.. other` end, andmeans whereby said push4 piece moves the end of the spring with. it asmoves on said casing between said positionswhereby said spring pressesagainst said push piece at one or the other. side of the axis of saidspring, when said push piece is in one or the other ot said positions.

4. In a lock of the class described, a casing, a push piece. mountedfor. sliding movement onsaid casing between a locking, and'. a.releasing position, a spring pressing` axially thereof at one endagainst said pushl piece. substantially perpendicularly tothe directionof movement ofsaid push piece and against a part of the. lock at itsother end, and means, whereby said push piece movesy the end, oithespring with it as. it. moves on said' casing between said positionswhereby said spring presses against said push piece. at one. or theother side of the axis, of said spring when said push. piece is in. oneor-the other of said positions.

5. In a lock of the latchbolt slidable longitudinallyof saidcasing, arollback for retracti'ng sai'd,1'atchbolt, a push piece for lockingsaidrollback movable ony said casing between locking and unlocking positionsrelatively to saidrollback; a spring positioned longitudinally of said.casing. and; eecting. at its outer end theurging oi thel'atchbolt toaprojected position, the inner end oi said spring-bear ing against thesaid. push piecevand. moving, with the said push piece as, said pushpiece, moves relatively. to. said casing. I i

6. In a lock` of. the class described., a casing, a latchbolt. slidablelongitudinally of` said casing, a rollback. for. retracting said,latchbolt, a, push piece. for locking saidjrollback slidable trans:vers'ely of said casing between. lockingandunlocking positionsrelatively. to. saidprollback, a helically wound spring positioned withitsasds longitudinal of said casing and effecting at its classydescribed.. a casing,` a

aereas-sesr outer end the urging of the latchbolt to a pro,- jectedposition, the inner end of said spring bearing against said push pieceand maintained by said push piece out of its normal axial alignment whensaid push piece is in either its locking or its unlocking positions.

7. In a lock of the class described, a casing, a push piece mounted formovement on said casing between locking and releasing positions, aspring pressing axially thereof at one end against said push piece andagainst a part of the lock at its other end, means whereby said pushpiece moves the end of the spring with it substantially perpendicularlyto the axis of said spring as said push piece moves on said casingbetween said positions, and detent means yieldingly retaining said pushpiece in each of said positions.

8. In a lock of the class described, a casing, a push piece mounted forsliding movement on said casing between a locking and a releasingposition, a spring pressing axially thereof at one end against said pushpiece substantially perpendicularly to the direction of movement of saidpush piece and against a part of the lock at its other end, meanswhereby said push piece moves the end of the spring with it as it moveson said casing between said positions, and detent means yieldinglyretaining said push piece in each of said positions.

9. In a lock of the class described, a casing, a latchbolt slidablelongitudinally of said casing, a rollback for retracting said latchbolt,a push piece for locking said rollback slidable transversely of saidcasing between locking and unlocking positions relatively to saidrollback, a spring positioned longitudinally of said casing and electingat its outer end the urging of the latchbolt to a projected position,the inner end of said spring bearing against the said push piece andmoving with the said push piece transversely of said casing, and detentmeans yieldingly' retaining said push piece in each of said positions.

10. In a lock of the class described, a casing, a latchbolt slidablelongitudinally of said casing, a rollback for retracting said latchbolt,a push piece for locking said rollback slidable transversely of saidcasing between locking and unlocking positions relatively to saidrollback, a helically wound spring positioned with its axis longitudinalof said casing and effecting at its outer end the urging of thelatchbolt to a projected position, the inner end of said spring bearingagainst said push piece and maintained by said push piece out of itsnormal axial alignment when said push piece is in either of itspositions, and det-ent means yieldingly retaining said push piece ineach of said positions.

11. In a lock of the class described, a casing, a latchbolt slidablelongitudinally in said casing, inside and outside rollbacks forretracting said latchbolt, aretractor through which said rollbacksretract said latchbolt, a spring pressing said retractor into a positioncorresponding to the pro.. jected position of said latchbolt, a pushpiece slidable transversely of said casing into locking and unlockingpositions, means whereby said push piece when in locking position locksthe outside rollback while leaving the inside rollback unlocked, aspring positioned longitudinally of said casing and effecting at itsouter end the urging of the latchbolt to a projected position, the innerend of said spring bearing against the said push piece and moving withthe said push piece transversely of said casing, and detent means onsaid retractor for yieldingly retaining said'push piece in each of saidpositions.

12. In a lock of the class described, a casing, a latchbolt slidablelongitudinally in said casing, inside and outside rollbacks forretracting said latchbolt, a retractor through which said rollbacksretract said latchbolt, a spring pressing said retractcr into a positioncorresponding to the projected position of said latchbolt, a push pieceslidable transversely of Vsaid casing into locking and unlockingpositions, means whereby said push piece when in locking position locksthe outside rollback while leaving the inside rollback unlocked, aspring positioned longitudinally of said casing and effecting at itscuter end the urging of the latchbolt to a projected position, the innerend of said spring bearing against the said push piece and moving with'said push piece transversely of said casing, detent means on saidretractor for yieldingly retaining said push piece in each of saidpositions, and means on said latchbolt for moving said push piece fromits locking position to its unlocking position when said latchbolt isretracted.

13. In a lock of the class described, a casing, a latchbolt slidablelongitudinally in said casing, inside and outside rollbacks forretracting said latchbolt, a retractor through which said rollbacksretract said latchbolt, a spring pressing said retractor into a positioncorresponding to the projected position of said latchbolt, a push pieceslidable transversely of said casing into locking and unlockingpositions, means whereby said push piece when in locking position locksthe outside rollback while leaving the inside rollback unlocked, aspring positioned longitudinally of said casing and effecting at itsouter end the urging of the latchbolt to a projected position, the innerend of said spring bearing against the said push piece, means wherebysaid spring moves with the said push piece transversely of said casing,detent means on said retractor for yieldingly retaining said push piecein each of said positions, said latchbolt being adapted for reversalthrough insertion in said casing in rotated positions apart, and meanson said latchbolt in each of said rotated positions adapted to move saidpush piece from its locking position to its unlocking position when saidlatchbolt is retracted.

14. In a lock of the class described, a casing, a latchbolt movable insaid casing, a rollback for retracting said latchbolt, a push piece forlocking said rollback movable on said casing between locking andunlocking positions, said latchbolt being adapted for reversal throughinsertion in said casing in rotated positions 180 apart, and means onsaid latchbolt in each of said rotated positions adapted to move saidpush piece from its locking position to its unlocking position when saidlatchbolt is retracted.

15. In a lock of the class described, a casing, a latchbolt slidablelongitudinally of said casingpa rollback for retracting said latchbolt,a dog for locking said rollback movable in said casing between lockingand unlocking positions, said latchbolt being adapted for reversalthrough insertion in said casing in rotated positions 180 apart, andmeans on said latchbolt in each of said rotated positions adapted tomove said dog from its locking position to its unlocking position whensaid latchbolt is retracted.

16. In a lock of the class described, a casing, a latchbolt slidablelongitudinally in said casing, a rollback for retracting said latchbolt,a push piece slidable transversely of said casing into locking andunlocking positions, meansA whereby said push piece when in lockingposition looks the rollback, detent means push piece in each of saidpositions, said latchbolt being adapted for reversal through insertiontin said casing in rotated, positions 180 apart, and: means on saidlatchbolt in eachoi saidl rotated positions adapted to move said pushpiece fromV its rollback locking position to: its unlocking positionwhen said latohbolt is retracted.

17. In a lock of the class described, a casing, a latchbolt slidablelongitudinally in said` casing, inside and' outside rollbacks forretracting said latchbolt, a retractor through which said rollbacksretract said latchbolt, a spring pressing saidretractor into a positioncorresponding to the profor yieldingly retaining said iectedlpositionVoi said latohbolt,` a push piece slidable transversely. of said casingintoy locking and. unlocking-spositions, means whereby said push piecewhen inY locking position locks the outside roll-bask. while. leavingthe. inside rollback unlocked, a spring positioned longitudinally insaid casing. and bearing at its' outer end against the latchboltand atits inner end directly against said,

